Speaker
Ofer RIND
Description
Providing Grid applications with effective access to large volumes of data residing
on a multitude of storage systems with very different characteristics prompted the
introduction of storage resource managers (SRM). Their purpose is to provide
consistent and efficient wide-area access to storage resources unconstrained by
their particular implementation (tape, large disk arrays, dispersed small disks). To
assess their viability in the context of the US Atlas Tier 1 facility at Brookhaven,
two implementations of SRM were tested: dCache (FNAL/DESY joint project) and HRM/DRM
(NERSC Berkeley). Both systems included a connection to the local HPSS mass data
store providing Grid access to the main tape repository. In addition, dCache offered
storage aggregation of dispersed small disks (local drives on computing farm nodes).
An overview of our experience with both systems will be presented, including details
about configurations, performance, inter-site transfers, interoperability and
limitations.
Primary authors
O. Rind
(BROOKHAVEN NATIONAL LABORATORY)
R. Popescu
(BROOKHAVEN NATIONAL LABORATORY)
S. O'Hare
(BROOKHAVEN NATIONAL LABORATORY)
Z. Liu
(BROOKHAVEN NATIONAL LABORATORY)
